Inventions Practice Tests
Inventions Online Tests
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The MCQ: In which one of the following year/hot air balloon was patented; "Hor Air Balloon" App Download (Free) with answers: 1782-83; 1713-14; 1755-56; 1769-70; for online elementary school classes. Solve Inventions and Inventors Quiz Questions, download Google eBook (Free Sample) for school certificate.
In which one of the following country, hot air balloon was invented?
In which one of the following year/hot air balloon was patented?
Hot air balloon was discovered by the French pioneer named as
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